I am unable to run the smime demo code (JDK 1.2.2
WinNT 4.0 SP6). Even after creating a mailcap file, calling it
simple.mailcap, with the recommended DataContentHandlers for mime/multipart,
application/x-pkcs7-signature, etc., and placing it in my JDK\lib directory, as
the docs specify, the following error is thrown on the explicitly signed message
(first the plain message is sent successfully and without errors: